Correlations in double parton distributions: effects of evolution

被引：47

作者：

Diehl, Markus ^{[1
]}

Kasemets, Tomas ^{[2
]}

Keane, Shane ^{[1
]}

机构：

[1] Deutsches Elekt Synchroton DESY, D-22603 Hamburg, Germany

[2] Vrije Univ Amsterdam, Nikhef & Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 05期

关键词：

QCD Phenomenology; Hadronic Colliders; MULTIPARTON INTERACTIONS; QCD; SPIN; SCATTERING; EQUATIONS; NUCLEON; PHYSICS; RULES; HERA;

D O I：

10.1007/JHEP05(2014)118

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We numerically investigate the impact of scale evolution on double parton distributions, which are needed to compute multiple hard scattering processes. Assuming correlations between longitudinal and transverse variables or between the parton spins to be present at a low scale, we study how they are affected by evolution to higher scales, i.e. by repeated parton emission. We find that generically evolution tends to wash out correlations, but with a speed that may be slow or fast depending on kinematics and on the type of correlation. Nontrivial parton correlations may hence persist in double parton distributions at the high scales relevant for hard scattering processes.

引用

页数：36

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